Fairphone 3: physically disabling the microphones?

[phoneuser]

So, I had a little time on my hands, a compatible Bluetooth as well as a wired headset, and all the required tools (see iFixit list & ESD gloves & the ESD variant of the suggested Knipex nipper BertG suggested (64 62 120 ESD, EAN: 4003773025085).

I disassembled the Fairphone 3, which was staggeringly easy even down to the bare circuitry of the top and bottom modules (except for a handful stubborn Phillips screws). I have not done anything further yet, because I was a bit surprised when inspecting the bare top module with the secondary microphone. If one flips the bare top module, one can see a silver box which looks a lot like the one on the bottom module. The silver box on the top module is “pretty much exactly” positioned on the other side of the golden chip, which Alex.A marked as secondary microphone.

What do you think:
• Are both these components part of the secondary microphone?
• Only one of them? And which one then? ^^

I assembled the FP3 again and await your feedback By the way: I intend to test the microphones after the “operation” with the integrated check up tool in the developer options, which I found via this thread:

CHECKUP diagnosis on the FP3 – and its future

For the sake of completeness the FP3 comes with a service test tool preinstalled. The tool can be helpful to track down all sorts of hardware problems. Seems to have a similiar purpose as the Fairphone “Checkup tool”: This suggestion is implemented You can find this tool at the very buttom of developer options as Service Menu. (developer options need to be enabled first)

For me the mic tests so far had no feedback, probably because it is improved as was suggested in that very thread.